abolish one sen coin?

suddenly the domestic trade and consumer affairs ministry announced that the country will standardised the usage of one sen coin...saying that it will help the government to save a lot of money in producing one sen coin in the long run...by standardising it....but to me....i was thinking that the government is trying to earn money from the public...in another way...apart from paying taxes to them...by trading business...to earn our hard earned money...to me...we as consumers are always in the loosing party because we are the people who need to eat and live...by implementing this system which is to reduce the usage of one sen...i can't see any benefits to us as the public...here is the standardisation...one and two sens...don't need to pay...while three, four, six and seven sens will be counted as five sens....lastly eight and nine sens will be counted as ten sens...it make it sounds like fair and we as consumers sounds benefited....but who really know the situation?some of the supermarts..they will not borther to return one sen coins to consumers...assuming that the consumers do not want it...therefore...by implementing this standardisation...isn't it also much more encouraged the traders to monopoly the business...to me...this rounding up mechanism did not benefit the public at all....